The device consists of a glass tube.Shaped and carefully ground on the inner surface so that a lon

The device consists of a glass tube.Shaped and carefully ground on the inner surface so that a lon

题目
The device consists of a glass tube.Shaped and carefully ground on the inner surface so that a lon
答案
这种装置由一根玻璃管组成,玻璃管精心制作安装在该装置的内部表面这样一条经线……
举一反三
我想写一篇关于奥巴马的演讲的文章,写哪一篇好呢?为什么好
奥巴马演讲不用看稿子.为什么中国领导演讲要看?
想找英语初三上学期的首字母填空练习……
英语翻译
1,人们染上烟瘾,最终因吸烟使自己丧命.
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